# Fartlek Interval Trainer vs Running Interval Timer Tracker

The clearest difference is in-app purchases: Running Interval Timer Tracker at none against Fartlek Interval Trainer's 4. Running Interval Timer Tracker also leads on iOS requirement (15 vs 26.0). Fartlek Interval Trainer's advantage is ads (none vs shown) and update cadence (every 9 days vs every 17 months). On price and device support there is nothing between them.

Both are free to download. Fartlek Interval Trainer sells 4 in-app purchases, starting at $0.99 per month. Running Interval Timer Tracker asks for nothing beyond the download.

Fartlek Interval Trainer ships an update every 9 days, Running Interval Timer Tracker every 17 months. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Fartlek Interval Trainer | Running Interval Timer Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (19 ratings)](https://appshunter.io/ios/app/running-interval-timer-tracker/id6469014860/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | **75.0% of reviews** | 62.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 17 months |
| Monetization | Freemium | **Free** |
| Size | 84 MB | 2 MB |
| Requires iOS | 26.0 | **15** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Richard English](https://appshunter.io/developer/1537547687) | [App All Day Pty Ltd](https://appshunter.io/developer/1514345817) |

## What reviewers say

### Fartlek Interval Trainer

[App page](https://appshunter.io/ios/app/fartlek-interval-trainer/id1537547685)

This running app automatically detects spontaneous intervals during Fartlek runs, providing live color-coded feedback on your effort. It also functions as a powerful timer for structured workouts like HIIT and Tabata, offering detailed metrics and syncing with Strava and Apple Health.

**Highlights:** Auto-detection of Fartlek intervals, Live color-coded effort feedback, Structured workout timer (HIIT, Tabata), Detailed interval metrics, Strava and Apple Health integration, Advanced effort level detection

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $6.99 | per year |
| RemoveAds | $0.99 | one-time |
| Lifetime | $14.99 | one-time |


### Running Interval Timer Tracker

[App page](https://appshunter.io/ios/app/running-interval-timer-tracker/id6469014860)

This app helps you create and track personalized running interval workouts. Customize rounds, sprint durations, and recovery periods for high-intensity training. Its simple interface makes it easy to focus on your run and improve performance.

**Highlights:** Customizable intervals, High-intensity training (HIIT), User-friendly interface, Versatile workout types, Warm-up and cool-down periods, Track performance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fartlek Interval Trainer free?

Fartlek Interval Trainer is free to download, with in-app purchases available.

### Is Running Interval Timer Tracker free?

Running Interval Timer Tracker is free to download, with no in-app purchases.

### Do Fartlek Interval Trainer or Running Interval Timer Tracker have ads?

Running Interval Timer Tracker shows ads; Fartlek Interval Trainer does not.

### Which is updated more often, Fartlek Interval Trainer or Running Interval Timer Tracker?

Fartlek Interval Trainer ships an update every 9 days, and Running Interval Timer Tracker every 17 months. Most recently, Fartlek Interval Trainer was updated on September 22, 2026 and Running Interval Timer Tracker on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*